Cable connecter and support



May 24, 1938. w. OEDING CABLE CONNECTER AND SUPPORT Filed June 8, 1935 mR o w. m m fi mm Patented May 24, 1938 UNITED STATES PATENT OFFICE CABLECONNECTEB AND SUPPORT Wolfgang Oe'dlng, Berlin-Charlottenbu g, Germany,assignor to.8lemens I; Halske, Aktlengesellschaft, Siemensatadt, nearBerlin,

Ger-

many, a corporation of 2 Claims.

proved formof connecter to electrically connect two wires or cablestogether.

A further object is to provide a connector be- 5 tween two wires orcables one of which is enclosed within an outer metallic shieldingcover, the connecter being also designed to support the latter wireentirely by means of its metallic cover.

Other and further objects of the invention will become apparent to thoseskilled in the art as the description thereof proceeds. For a betterunderstanding of the invention, however, reference is made to theaccompanying drawing in which;

Fig. l is a partial cross section of a connecter made according to myinvention, and

Fig. 2 is a side view of the connecter shown in Fig. 1.

Terminals or connecters of the kind )heretofore mostly used are withoutexception of such a kind that the tension produced by the weight of theline or feeder is jointly taken up by the sheath and the insideconductor. As a result of the permanently acting tractive andoccasionally also flexural stresses, the slender inside conductor is asubject to a risk of breaking. In addition the mounting of suchterminals is attended with serious dimculties, especially in shieldedradio frequency or antenna feed leads, which, as is well known, becauseof the capacitive action of a the screening metal sheath are of largediameter and. of especially suitable hollow forms of construction forthe insulating and the supporting or strain material.

In the terminal here disclosed these disadvantages are obviated.According to this invention the terminal of a line or feeder has aconical clamp devicefor receiving the braiding cover which thus iscalled upon to support the line alone, whereas the inside conductor andthe so rubber envelope thereof are not called upon to withstand anytension.

- As shown in the sectional view Fig. 1, i denotes the braided metallicenvelope of a line or feeder comprising the inner conductor I and itsinsulation covering 2. Between the insulation covering and the braidingon top is introduced a preferably separate clamping cone member 4 ofinsulating material. Fitted thereover is a clamp nut 5 also ofinsulation material and having a correspondingly shaped inside bore,said nut piece 5 being screwed in a screw cap t. The inside conductor 3passes through co-axial bores in the clamp cone member and in the screwcap as well as the longitudinal slot indicated at I and loosely in theextension of the screw cap is locked under An object of this inventionis to provide an imthe screw. engaging a threaded hole in the end of capI.

This conical clamp device after mounting constitutes a self-enclosedunit with which a suspension device and contact terminals for the drain5 wires may be united. In the exemplified embodiment shown, the screwcap 0 has at the top the form of a bolt support or screw upon which aterminal cap may be screwed as indicated at I. This cap I is suspendedfrom a wire clip I. (Fig. 10 2) which is held by an egg-shaped insulatorchain It. The screw cap I also serves to establish fixed connectionbetween lead-oi! wire ll and the clamp device or terminal.

The action of the arrangement is as follows: u

The clamp cone member 4 inserted underneath the braided cover I pressesthe latter. after the clamp nut I has been shifted over and after it hasbeen screwed fast with the cap t, with great force against the conicalinside surface of the clamp nut. In this manner the extraction of thebraided cover i which alone supports the entire weight of the cable andoccasionally also ilexural strains thereof is prevented. The insideconductor I is brought out of the screw 'cap I through the inside boreso that there is suillcient play or clearance. and connected with theterminal screw 8 so that thus perfect relieving of stress of the slenderinside conductor without compressive or bending eil'ects is insured.

Having described my invention, what I claim as novel and desire tosecure by Letters Patent is! 1. Means for supporting a verticallydepending cable having an outer metallic braiding and a centralinsulated conductor without strain on the a central conductor,comprising in combination a hollow nut tapered internally and in contactwith the outer surface of said braiding, a wedge between the insulationand the interior surface of said braiding, a hollow member having aninternally threaded portion engaging said nut and a reduced shoulderportion adapted to engage the end of said wedge to thereby expand theend of said braiding and maintain it firmly in contact with the taperedsurface of said nut, screw means for securing the upper end of thecentral conductor to the upper surface of said hollow member in theabsence of tension in said conductor, a vertically depending supportingmember engaging the upper portion of said hollow member and serving as asupporting means for said cable and a lead wire clamping meansintermediate the last two members for providing a conductive connectionbetween said conductor and an external circuit. ll

2. A connecter device comprising the combination of a cable having anouter metallic sheath extending along substantially its entire lengthand serving as a shielding means, an inner conductor insulatedtherefrom, a clamp nut tapered to engage said sheath and having acentral aperture passing said inner conductor, a tapered wedging memberinserted between the insulation and the outer metallic sheath of saidcable, a member provided with screw means wedging said tapered memberlongitudinally of said cable, said last named member being hollow andpassing said inner conductor, securing means arranged to secure saidconductor to the end of said last named member, a supporting memberengaging the upper portion of the last named member and serving as asupporting means for the cable and a lead wire clamping means positionedbetween the supporting member and the last named member for providing aconductive connection between the conductor and an external circuit.

WOLFGANG OEDING.

